[Nix-dev] hitting maximum number of hard links on btrfs

[Mathijs Kwik]

hmm, it seems to remain here.

Should it be safe to remove /nix/store/.links?

On Wed, Oct 31, 2012 at 9:32 AM, Vladimír Čunát <vcunat at gmail.com> wrote:
> On 10/31/2012 12:14 AM, Mathijs Kwik wrote:
>>
>> So btrfs has a soft limit, depending on file name/path length, which
>> only kicks in in this special situation where you have many hard links
>> to a file in the same directory.
>> Given nix's special behavior in /nix/store/.links, I think this is the
>> problem.
>>
>> Do I need to worry about this message?
>> As in, store corruptions? Inability to garbage-collect later on?
>> Or does this just mean I will have a few more duplicate files in store
>> that can't be duped?
>
>
> This shouldn't lead to any corruption. Anyway, you can check it by nix-store
> --verify --check-contents. I'm running into hard-link limit on btrfs for a
> long time without any problems, especially empty files did that for me...
>
> I didn't know it was done in one directory, though. I suppose
> /nix/store/.links only exists during the process as I don't have it.
>
>
> Vlada
>
>
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